Finding the Fourth Proportional to 3,768.69, 5,619.93 and 3,684.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,768.69 : 5,619.93 = 3,684.99 : x
2. Step 2: Convert to fraction form
   3,768.69/5,619.93 = 3,684.99/x
3. Step 3: Cross multiply
   3,768.69x = 5,619.93 × 3,684.99
4. Step 4: Simplify right side
   3,768.69x = 20,709,385.85
5. Step 5: Solve for x
   x = 20,709,385.85/3,768.69
6. Step 6: Final answer
   x = 5,495.12